C.S.
Hi there - Arizona in February is the best! I am an Arizona native so I know the state very well.
We're you planning to do a day trip or were you going to stay overnight somewhere? Scottsdale to the G.C and back is a very long day, not impossible, but long.
If you're going to do an overnight then I would suggest staying in Flagstaff and doing a hike in Sedona, both are on the way to the G.C.
Sedona is much more scenic and activity-friendly (nice tourist shopping areas and easy hikes/jeep tours) than the G.C.
You could also do a day trip to the G.C. and do your hiking in Scottsdale (I still recommend a drive through Sedona, if you've never been).
Feel free to email if you'd like some more info. or have questions.
Good luck!
C.